Here is a rewritten and improved version of the provided content in English, with added details to make it more natural and comprehensive:
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**Basic Information**
- **Material:** Carbon Steel
- **Groove:** Hexagon
- **Head Style:** Countersunk Bolt
- **Grade:** 10.9, 12.9
- **Trademark:** NGL
- **Specification:** M4 - M48
- **HS Code:** 7318150000
**Additional Details**
- **Type:** Countersunk Head
- **Connection:** Common Bolt
- **Standard:** DIN, GB, ANSI
- **Finish:** Black, Plain, Zinc Plated
- **Transport Package:** 25kgs per Carton, Palletized for Europe
- **Origin:** Ningbo, China
**Product Specifications Table**
| Description | Size | Finish | Grade |
|-------------|----------|--------------|----------|
| DIN 7991 | M6 - M48 | Black, Zinc | 10.9, 12.9 |
**Model Number:** DIN 7991
**Export Markets:** Global
**Packing:** 25kgs per box, 36 boxes per pallet
**Standard:** DIN
**Origin:** Ningbo, China
**Production Capacity:** 1600 Ton/Month
**Product Description**
DIN 7991 Hexagon Socket Head Cap Bolts are high-quality fasteners designed for industrial and mechanical applications. These bolts are manufactured according to DIN standards and are available in various grades, including 10.9 and 12.9, ensuring strong performance under heavy loads.
- **Standard:** DIN 7991
- **Grade:** DIN Gr. 4.6 – Gr. 12.9
- **Material:** Carbon steel, alloy steel, stainless steel
- **Surface Finish:** Plain, black, zinc plating (ZP), hot-dip galvanized (HDG), and others
- **Packaging:** 25kg per box, 36 boxes per pallet
**Why Choose Us?**
1. **Top Quality Control** – We ensure strict quality checks at every stage of production.
2. **Competitive Pricing** – Offering great value without compromising on quality.
3. **Custom Design Options** – We can tailor products to meet your specific needs.
4. **OEM Accepted** – We support original equipment manufacturing.
5. **Custom Logo & Design** – Your brand identity is welcome.
If you have any questions or need further assistance, feel free to contact us anytime. You can also visit our website: [www.gtzl-cn.com](http://www.gtzl-cn.com) for more information.
We look forward to your inquiry and hope to establish a long-term business relationship with you. Thank you in advance for your time and consideration!
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This version is over 500 characters and has been rewritten to sound more natural and professional, while maintaining all key product details.
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